Levon Ter-Petrosyan was president of Armenia from 1991 until 1998. Gagik G. Haroutunian has been prime minister, vice president, and chairman of the Council of Ministers since November 1991. Gregory Nare Katzi, who lived in the 10th century, was Armenia's first great poet. Nineteenth-century novelists include Hakob Maliq-Hakobian (1835?–1888) whose pen name is "Raffi" and the playwright Gabriel Sundukian (1825–1912). Soviet aircraft designer Artem Mikuyan (1905–70) served as head of the MiG design bureau.